12839993 has 8 divisors (see below), whose sum is σ = 13120800. Its totient is φ = 12561408.

The previous prime is 12839989. The next prime is 12840001. The reversal of 12839993 is 39993821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12839993 - 2² = 12839989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12839903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16313 + ... + 17081.

It is an arithmetic number, because the mean of its divisors is an integer number (1640100).

Almost surely, 2^12839993 is an apocalyptic number.

It is an amenable number.

12839993 is a deficient number, since it is larger than the sum of its proper divisors (280807).

12839993 is an equidigital number, since it uses as much as digits as its factorization.

12839993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111.

The product of its digits is 104976, while the sum is 44.

The square root of 12839993 is about 3583.2935966789. The cubic root of 12839993 is about 234.1647912673.

The spelling of 12839993 in words is "twelve million, eight hundred thirty-nine thousand, nine hundred ninety-three".